US5300494A - Delivery systems for quaternary and related compounds - Google Patents

Delivery systems for quaternary and related compounds Download PDF

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Publication number
US5300494A
US5300494A US07/378,837 US37883789A US5300494A US 5300494 A US5300494 A US 5300494A US 37883789 A US37883789 A US 37883789A US 5300494 A US5300494 A US 5300494A
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US
United States
Prior art keywords
chitosan
sub
active agent
solution
water
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US07/378,837
Inventor
II George L. Brode
George A. Salensky
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Baker Cummins Dermatologicals Inc
Original Assignee
Union Carbide Chemicals and Plastics Technology LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to US87138186A priority Critical
Priority to US07/189,312 priority patent/US4929722A/en
Priority to US07/268,871 priority patent/US4946870A/en
Application filed by Union Carbide Chemicals and Plastics Technology LLC filed Critical Union Carbide Chemicals and Plastics Technology LLC
Priority to US07/378,837 priority patent/US5300494A/en
Assigned to UNION CARBIDE CHEMICALS AND PLASTICS COMPANY INC. reassignment UNION CARBIDE CHEMICALS AND PLASTICS COMPANY INC. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: BRODE, GEORGE L. II, SALENSKY, GEORGE A.
Assigned to UNION CARBIDE CHEMICALS & PLASTICS TECHNOLOGY CORPORATION reassignment UNION CARBIDE CHEMICALS & PLASTICS TECHNOLOGY CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: BRODE, GEORGE L., II, SALENSKY, GEORGE A.
Application granted granted Critical
Publication of US5300494A publication Critical patent/US5300494A/en
Assigned to BAKER CUMMINS DERMATOLOGICALS, INC. reassignment BAKER CUMMINS DERMATOLOGICALS, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: PLASTICS TECHNOLOGY CORPORATION, UNION CARBIDE CHEMICALS
Anticipated expiration legal-status Critical
Application status is Expired - Lifetime legal-status Critical

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